I got served some methylone by my usual guy for "molly". I was immediatly suspicious because it had that "mini-rice" look where all the crystals are very small and all about the same size, almost like large table salt crystals. It looked "too uniform" to be some underground produced MDMA. I took it home and the test went to yellow, confirming my suspicions.
I promptly told this information to the person which I acquired this "molly" from. He apologized and said that "everyone else likes it". I told him that I'm not everyone, and he told me he would take it back or replace it with some thing else.
I went for the latter option, and these new "brown sugar" like crystals, of varying sizes test to black/dark purple!
Maybe it's the nature of it being an empathogen, but I'm lucky to have someone who would take it back.
That would never happen with any coke/dope dealers I know.